Castellated nut



F. 0. JAQU ES, 18- I CASTELLATED NUT.

APPLICATION FILED MAY I2, I919.

,425591 PatentedAug. 15, 1922.

I INVEN TUE Ara-1:21am": Y I

FERNANDO osean Jeeves. or PROVIDENCE, sirens re a ns, .cssrenon or own-HALF 'IO HAROLD oarnwnrn PECKHAM, or .onansron, nnennrsnann.

CASTELLATEID' NUT.

Application filed May 12,

To ((7.1 z/r/zom mag, comer Be. it known that I, ll 1 oo Oscar: JAQUES,Jr. a citizen of the United States, residing at Providence, in thecounty not Providence and State of Rhode Island, have invented a new anduseful Improvement in Castellated Nuts, of which the following is aspecification.

My invention is an improvement in castellated nuts, reference being hadto my ap plication for United States Patent on method of making myimproved castellated nuts, filed Januar r 9, 1919, Serial No. 270,- 420to which this is a companion application.

In the usual previous construction of (ZZIStQllittGtl nuts, the nuts aremachined out of bar metal such as a low steel. The nuts with thecastellations thereon are only as strong and durable as the bar metalfrom which they are made and fractures and other faults in the bar metalare reproduced in the nuts, therefore, the nuts can not always bedepended on for strength also there is a percentage of seconds thrownout, where the imperfections can be seen. These machined nuts are alsocomparatively costly to make, they are rough in finish and requirepolishing for electro plating or for other reasons.

The object of my invention is to improve the construction and reduce thecost of castellated nuts, whereby all of the faults in the old form ofmachined castellated nuts, as enumerated above, are eliminated and astronger, more durable, perfect and cheaper castellated nut produced,than has hereto fore been done.

My invention consists in the peculiar and novel construction of acastellated nut in which the metal forming the body and castellations iscompressed and condensed by the castellated nut being formed up andcompressed in dies from a sheet metal blank having radial arms whichform the castellations on the nut and in which is a predeterminedgreater superficial amount of metal than there is in the completed nut,said castellated nut having a strong, durable and uniform condensedstructure and finished surface, as will be more fully set forthhereinafter and claimed.

To those skilled in the art to which my invention has reference, I willnow describe how my improved castellated nut is made.

Figure 1 is a face view 01": the metal blank cut out "from sheet metal,showing radial Specification of Letters Patent,

1919. Serial No. 256,560.

arms on the blank which forth. the castellations of the completed(:astellated nut.

Figure 2 is an edge view of the blank.

Figure 3 is vertical sectional view through dies which cup the blank.

Figure 4 is a vertical sectional view through dies which compress thesheet metal cup, shown in Figure 3, into a hexagonal shaped nut blank.

Figure 5 is a vertical sectional view through dies which punch out thebottom of the nut blank.

Figure 6 is a. side view of the lower end of the upper die member, shownin Figure 4-, for forming the nut blank.

Figure 7 is a castellated end view of my improved castellated nut, and

Figure 8 is a sectional view through the castellated nut taken on line8.8 of Figure 7. i

In the drawing 9 indicates a sheet metal blankhaving a flat body portion10 from which extend fiat radial arms 11.11. 12 a lower fixed die memberhaving a cylindrical cavity 13 and a bottom hole 14;. 15 an upper diemember shaped to fit in the cavity 13 and having a lower end 16, the

lower and upper die members 12 and 15 being shaped to form the blank 9into a cylindrical cup 17 having a closed bottom 18 and an openeastellated end, as shown in Figure 3, said cup 17 having a greaterdepth than the height of the completed castellated nut. 19 a lower diemember having a cavity 20 shaped to form the outside or the nut blankand a closed bottom 21. 22 an upper die member shaped to lit in thecavity 20 and having the portion 23 shaped to "form the castellations onthe nut out of the arms on the blank, and the end 2-1 shaped to form theinside of the nut blank, as shown in Figures 4 and 6. 25 a compressednut blank having the closed bottom 18 and open castellated end, as shownin Figure 4-. 26 a lower die member having a cavity 27 shaped to receivethe nut blank 25, and a central bottom' hole 28. 29 an upper die memberhaving the punch end 30 for punching out the bottom 18 of the nut blank25, as shown in Figure 5, and 31 the completed castellated nut havingthe castellations 32.32 and the central screwthreaded hole 33 as shownin Figures and 8.

A blank 9 having a flat body 10 and radial arms 11.11 is out out ofsheet metal by comparatively deep cylindrical euphaving an openeastellated end, formed from the arms on the blank. The cup blank isthen placed in suitable nutblank forming dies and the cup compressedinto a caste-Hated nut blank having a closed end. The nut blank is thenplaced in suitable punching dies and the closed bottom ofthe nut blankpunched out. The nut blank is then internally sere v tlnreaded, therebycompleting the cestellatecl nut. i

My improved eastellated nut made from a lated nut has a condensed uniterm structure,

it is stronger and more durable and having a hard smooth outer surface,it vwill wear longer and is rust resisting, and this hard smooth surfacecovers the entire outer S1117-- if'a-ce of the nut and its eastellation.

Having thus described my invention 1. claim as new i A nut blank. havingeastellations and forn'ied of sheet metal compressed. and havingucentral hole and it Web extending across the central hole. 7

In testimony whereof, name to this specification.

nnnuanno osean menus, J12.

I have signed my

